This roster includes the known officers and enlisted men of the 18th Ohio Infantry (Three Years’ Service), organized by Field & Staff and Companies A through K. Information is drawn from 19th-century state adjutant general reports, the Official Records, and verified regimental histories.
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For an overview of this regiment’s organization, service, engagements, and casualties, see the regiment summary page.
Research This Regiment
If you’re researching ancestors in the 18th Ohio Infantry (Three Years’ Service), these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
Records for Field & Staff officers are incomplete in the surviving state adjutant general reports.
Company A
Records for this company are incomplete in the surviving state adjutant general reports.
Company B
Records for this company are incomplete in the surviving state adjutant general reports.
Company C
Records for this company are incomplete in the surviving state adjutant general reports.
Company D
Records for this company are incomplete in the surviving state adjutant general reports.
Company E
Records for this company are incomplete in the surviving state adjutant general reports.
Company F
Records for this company are incomplete in the surviving state adjutant general reports.
Company G
Records for this company are incomplete in the surviving state adjutant general reports.
Company H
Records for this company are incomplete in the surviving state adjutant general reports.
Company I
Records for this company are incomplete in the surviving state adjutant general reports.
Company K
Records for this company are incomplete in the surviving state adjutant general reports.
Consolidations or Transfers
Upon expiration of its term in November 1864, the veterans and recruits of the 18th Ohio Infantry (Three Years’ Service) were consolidated with those of the 35th Ohio Infantry, forming the 18th Veteran Ohio Infantry. Later, the 18th Veteran regiment was organized by consolidation of veterans and recruits from the 1st, 2nd, 18th, 24th, and 35th Ohio Infantry regiments.
Sources & Notes
- Official Records of the War of the Rebellion, Series I, various volumes and parts as relevant to the 18th Ohio Infantry (Three Years’ Service).
- State Adjutant General Report for Ohio (various years and volumes; specific pages for the 18th Ohio Infantry).
- Dyer’s Compendium.
- Fox, “Regimental Losses in the American Civil War.”
- The Union Army, Federal Publishing Company, 1908, Volume 2.